Abstract
The altitude variation of the intensity ofλ 6300 line of OI atom and that ofλ 3914 (0–0 band of the first negative system of N +2 ) in the day airglow have been calculated. It has been found that photodissociation of O2 by the Schumann-Range continuum is mainly responsible for the emission ofλ 6300 line (intensity 65 KR). Emission produced by dissociative recombination of O +2 and NO+ ions with electrons is of less importance (intensity 22 KR). The low intensity ofλ 6300 line during a solar eclipse, when the photo dissociation process is absent, is in conformity with the intensity (<6 KR) obtained by Tanabe and Tohmatsu (1959). Assuming that the resonance fluorescence is responsible for the emission ofλ 3914 band, the intensity of this band is calculated. The calculated intensity (7 KR) is within the limits of the values (>1 KR and <70 KR) obtained from theoretical considerations by Chamberlain and Sagan (1960).
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Communicated by Dr. R. K. Asundi,f.a.sc.
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Ghosh, S.N., Sharma, K.D. On the day airglow. Proc. Indian Acad. Sci. 59, 318–326 (1964). https://doi.org/10.1007/BF03046446
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DOI: https://doi.org/10.1007/BF03046446